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Qingming Ma

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Publication

Featured researches published by Qingming Ma.

Archive | 2008

Stone oil tool joint capable of transferring electric power and signal

Weiping Xu; Zhonghua Wu; Qingming Ma; Haoyu Sun; Yunfei Nie

Archive | 2011

Driving force and signal transmission drill stem

Haoyu Sun; Zheng Liang; Zhonghua Wu; Shihong Xiao; Qingming Ma; Zhifeng Wang

Archive | 2010

Electromagnetic induction MWD (Measurement While Drilling) data transmission system

Qingming Ma; Haoyu Sun; Zhonghua Wu; Shiping Zhang; Zheng Zhu

Archive | 2012

Power and signal transmission drill stem

Haoyu Sun; Zheng Liang; Zhonghua Wu; Shihong Xiao; Qingming Ma; Zhifeng Wang

Archive | 2011

Cable inlet device for power and signal transmission drill rod

Haoyu Sun; Zheng Liang; Zuohui Li; Zhonghua Wu; Shihong Xiao; Qingming Ma; Zhifeng Wang

Archive | 2008

Petroleum drill pipe joint capable of transmitting electric power and signal

Weiping Xu; Zhonghua Wu; Qingming Ma; Haoyu Sun; Yunfei Nie

Archive | 2010

Magnetic induction type signal transmission drill pipe joint

Zuohui Li; Qingming Ma; Haoyu Sun; Minsheng Wang; Zhifeng Wang; Zhonghua Wu

Archive | 2012

Power and signal transmission drill stem cable inlet device

Haoyu Sun; Zheng Liang; Zuohui Li; Zhonghua Wu; Shihong Xiao; Qingming Ma; Zhifeng Wang

Archive | 2010

Magnetic inductive signal transmission petroleum tool joint

Haoyu Sun; Minsheng Wang; Zhifeng Wang; Zuohui Li; Zhonghua Wu; Qingming Ma

Archive | 2009

Thrust execution device of automatic vertical drilling

Yunfei Nie; Zhonghua Wu; Qingming Ma; Haoyu Sun; Zhenguo Su

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Collaboration

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